Problems with the SmartKey
Problem
You cannot lock or unlock the vehicle using the SmartKey.
Possible causes/consequences and Solutions
The SmartKey battery is discharged or nearly discharged.
- Try again to lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the / button.
If this does not work:
- Check the SmartKey battery () and replace it if necessary ().
- Lock () or unlock () the vehicle using the mechanical key.
The SmartKey is faulty.
- Lock () or unlock () the vehicle using the mechanical key.
- Have the SmartKey checked at a qualified specialist workshop.
Problem
You can no longer lock or unlock the vehicle using KEYLESS-GO.
Possible causes/consequences and Solutions
KEYLESS-GO is in standby mode because the vehicle has not been unlocked for an extended period.
- Pull the door handle and then turn the SmartKey to position 2 in the ignition lock.
There is interference from a powerful source of radio waves.
- Lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the / button.
There is a malfunction with KEYLESS-GO.
- Lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the / button.
- Have KEYLESS-GO checked at a qualified specialist workshop.
If this does not work:
- Check the SmartKey battery () and replace it if necessary ().
- Lock () or unlock () the vehicle using the mechanical key.
Problem
You have lost a SmartKey.
Possible causes/consequences and Solutions
- Have the SmartKey deactivated at a qualified specialist workshop.
- Report the loss immediately to the vehicle insurers.
- If necessary, have the locks changed as well.
Problem
You have lost the mechanical key.
Possible causes/consequences and Solutions
- Report the loss immediately to the vehicle insurers.
- If necessary, have the locks changed as well.
Problem
The engine cannot be started using the SmartKey.
Possible causes/consequences and Solutions
The on-board voltage is too low.
- Switch off non-essential consumers, e.g. seat heating or interior lighting, and try to start the engine again.
If this does not work:
- Check the starter battery and charge it if necessary ().
or
- Jump-start the vehicle ().
or
- Consult a qualified specialist workshop.
Problem
The engine cannot be started using KEYLESSGO. The SmartKey is in the vehicle.
Possible causes/consequences and Solutions
A door is open. Therefore, the SmartKey cannot be detected as easily.
- Close the door and try to start the vehicle again.
There is interference from a powerful source of radio waves.
- Start your vehicle with the SmartKey in the ignition lock.
See also:
Removing the ball coupling
– Remove the spring cotter.
– Remove the bolt from the ball coupling
recess.
– Remove the ball coupling from the ball
coupling recess.
– Clean the ball coupling if it is dirty.
Information on ...
Redialing
The on-board computer saves the last names or numbers dialed in the redial memory.
Press the or
button on the steering wheel to
select the Tel menu.
Press the button to switch
to the ...
Important safety notes
A license agreement must exist in order
to activate the mbrace service. Ensure that
your system is activated and ready for use,
and press the
MB Info call button to
register. If any o ...